Voltage and capacitance regulation compensation device

Abstract

The invention discloses a voltage and capacitance regulation compensation device comprising a capacitor C1, a fuse FU1, a voltage regulator TYQ1, a transformer TV1, a discharge counter PC1, a lightning arrester FV1, a controller KZ1, an isolation switch QS1 and a grounding switch QE1. One end of the capacitor C1 is connected to one end of a primary coil, and the other end is connected to one end of the fuse FU1. The other end of the fuse FU1 is connected to the other end of the primary coil and a first wiring terminal of the voltage regulator TYQ1. A second wiring end of the voltage regulatorTYQ1 is connected to the controller KZ1. One end of the lightning arrester FV1 is connected to one end of an isolation switch QS1 and one end of the grounding switch QE1, and the other end of the grounding switch QE1 is grounded. One end of the discharge counter PC1 is connected to the other end of the lightning arrester FV1, and the other end of discharge counter PC1 is grounded. The problems ofover-voltage and inrush current in capacitor switching are solved.

Description

technical field [0001] The invention relates to the technical field of capacitor compensation, in particular to a compensation device for voltage regulation and capacity regulation. Background technique [0002] Due to the expansion of grid capacity and the increase of voltage levels, it is of great significance to maintain the normal voltage of grids at all levels and each user, so as to ensure the safe and economical operation of the grid and the normal use of electricity by users, which is of great significance to the development of the national economy. The optimal switching of capacitors in the distribution network is used to determine the switching strategy of the installed capacitor banks in the distribution system under different load conditions. For the adjustable capacitor banks, it is also necessary to determine the switching array. The problems existing in the traditional adjustable capacitor bank are as follows: 1. No matter how the capacitors are grouped, it is...

AI Technical Summary

Problems solved by technology

The problems existing in the traditional adjustable capacitor bank are as follows: 1. No matter how the capacitors are grouped, it is impossible to fully adapt to the change of system inductive reactive power. It can only be adjusted within a large range and cannot be fine-tuned; 2. Capacitor switching Overvoltage is generated, so frequent operation will seriously affect the life of the capacitor; 3. The inrush current problem of the capacitor during operation is generally limited by a series reactor, which inevitably sacrifices a part of the capacitor capacity to offset the loss of the reactor, and the series reactor It also increases the operating voltage of the capacitor, seriously affecting the operating life of the capacitor

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